$ git clone -n https://src.fedoraproject.org/rpms/sdcc.git /var/lib/mock/f45-build-35712-698/root/chroot_tmpdir/scmroot/sdcc
Cloning into '/var/lib/mock/f45-build-35712-698/root/chroot_tmpdir/scmroot/sdcc'...
$ git fetch origin ffcdb712caa3aa91ac5810f9ba3bb23a25459c58:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/sdcc
 * [new ref]         ffcdb712caa3aa91ac5810f9ba3bb23a25459c58 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at ffcdb71 update to 4.6.0