$ git clone -n https://src.fedoraproject.org/rpms/chntpw.git /var/lib/mock/f45-build-5050-337/root/chroot_tmpdir/scmroot/chntpw
Cloning into '/var/lib/mock/f45-build-5050-337/root/chroot_tmpdir/scmroot/chntpw'...
$ git fetch origin f2561dfc9f08c5d7e7efe8ce1f213e3ceeb758d1:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/chntpw
 * [new ref]         f2561dfc9f08c5d7e7efe8ce1f213e3ceeb758d1 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at f2561df Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild