$ git clone -n https://src.fedoraproject.org/rpms/libsemigroups.git /var/lib/mock/f45-build-16961-494/root/chroot_tmpdir/scmroot/libsemigroups
Cloning into '/var/lib/mock/f45-build-16961-494/root/chroot_tmpdir/scmroot/libsemigroups'...
$ git fetch origin dee63766ddd94131c278674b115948c94d2ccf54:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/libsemigroups
 * [new ref]         dee63766ddd94131c278674b115948c94d2ccf54 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at dee6376 Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild