$ git clone -n https://src.fedoraproject.org/rpms/plasma-print-manager.git /var/lib/mock/f41-build-824392-154063/root/chroot_tmpdir/scmroot/plasma-print-manager
Cloning into '/var/lib/mock/f41-build-824392-154063/root/chroot_tmpdir/scmroot/plasma-print-manager'...
$ git fetch origin 2744f6c4e49df974e10606e269ec35b8786026b7:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/plasma-print-manager
 * [new ref]         2744f6c4e49df974e10606e269ec35b8786026b7 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 2744f6c rebuild