$ git clone -n https://src.fedoraproject.org/rpms/libXaw.git /var/lib/mock/f45-build-15780-479/root/chroot_tmpdir/scmroot/libXaw
Cloning into '/var/lib/mock/f45-build-15780-479/root/chroot_tmpdir/scmroot/libXaw'...
$ git fetch origin 068dd3f68f351eb03e601eb25d0d16599a0c26cf:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/libXaw
 * [new ref]         068dd3f68f351eb03e601eb25d0d16599a0c26cf -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 068dd3f Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild