$ git clone -n https://src.fedoraproject.org/rpms/scanssh.git /var/lib/mock/f45-build-35666-698/root/chroot_tmpdir/scmroot/scanssh
Cloning into '/var/lib/mock/f45-build-35666-698/root/chroot_tmpdir/scmroot/scanssh'...
$ git fetch origin 1a51bf176c0c25b72bba58826e9eadeae0a1639e:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/scanssh
 * [new ref]         1a51bf176c0c25b72bba58826e9eadeae0a1639e -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 1a51bf1 Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild