$ git clone -n https://src.fedoraproject.org/rpms/molsketch.git /var/lib/mock/f45-build-19086-540/root/chroot_tmpdir/scmroot/molsketch
Cloning into '/var/lib/mock/f45-build-19086-540/root/chroot_tmpdir/scmroot/molsketch'...
$ git fetch origin ed0976aad3c126223af7f3e5f06532b43b61c664:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/molsketch
 * [new ref]         ed0976aad3c126223af7f3e5f06532b43b61c664 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at ed0976a Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild