$ git clone -n https://github.com/xcp-ng-rpms/xcp-emu-manager /var/lib/mock/v8.3-u-lpottier1-10097-28717/root/chroot_tmpdir/scmroot/xcp-emu-manager
Cloning into '/var/lib/mock/v8.3-u-lpottier1-10097-28717/root/chroot_tmpdir/scmroot/xcp-emu-manager'...
$ git fetch origin 3f6275b1f2690f668139d7ce82dd1008644153ea:KOJI_FETCH_HEAD
From https://github.com/xcp-ng-rpms/xcp-emu-manager
 * [new ref]         3f6275b1f2690f668139d7ce82dd1008644153ea -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 3f6275b Fix release ver