$ git clone -n https://gitee.com/rabbitali/jakarta-mail.git /var/lib/mock/dist-an23-build-490786-74523/root/chroot_tmpdir/scmroot/jakarta-mail
Cloning into '/var/lib/mock/dist-an23-build-490786-74523/root/chroot_tmpdir/scmroot/jakarta-mail'...
$ git fetch origin cab7ed9d9eaf24b4bebb5f85e5c483f6a63260e5:KOJI_FETCH_HEAD
From https://gitee.com/rabbitali/jakarta-mail
 * [new ref]         cab7ed9d9eaf24b4bebb5f85e5c483f6a63260e5 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at cab7ed9 Update code from upstream