$ git clone -n https://src.fedoraproject.org/rpms/bletchmame.git /var/lib/mock/f39-build-1686455-41098/root/chroot_tmpdir/scmroot/bletchmame
Cloning into '/var/lib/mock/f39-build-1686455-41098/root/chroot_tmpdir/scmroot/bletchmame'...
$ git fetch origin 57cb04ff83bbb74b6e2903ee90d82f571160a72d:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/bletchmame
 * [new ref]         57cb04ff83bbb74b6e2903ee90d82f571160a72d -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 57cb04f Rebuilt for https://fedoraproject.org/wiki/Fedora_39_Mass_Rebuild