$ git clone -n https://src.fedoraproject.org/rpms/libss7.git /var/lib/mock/f45-build-17042-495/root/chroot_tmpdir/scmroot/libss7
Cloning into '/var/lib/mock/f45-build-17042-495/root/chroot_tmpdir/scmroot/libss7'...
$ git fetch origin f2c5821d880a915a981cf9e1701341111fbf6c6e:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/libss7
 * [new ref]         f2c5821d880a915a981cf9e1701341111fbf6c6e -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at f2c5821 Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild