$ git clone -n https://gitee.com/mgb01105731/jakarta-activation1.git /var/lib/mock/dist-an23.3-build-430771-73054/root/chroot_tmpdir/scmroot/jakarta-activation1
Cloning into '/var/lib/mock/dist-an23.3-build-430771-73054/root/chroot_tmpdir/scmroot/jakarta-activation1'...
$ git fetch origin a23:KOJI_FETCH_HEAD
fatal: couldn't find remote ref a23
$ git reset --hard origin/a23
fatal: ambiguous argument 'origin/a23': unknown revision or path not in the working tree.
Use '--' to separate paths from revisions, like this:
'git <command> [<revision>...] -- [<file>...]'