$ git clone -n https://src.fedoraproject.org/rpms/gap-pkg-grape.git /var/lib/mock/f40-build-1997103-44106/root/chroot_tmpdir/scmroot/gap-pkg-grape
Cloning into '/var/lib/mock/f40-build-1997103-44106/root/chroot_tmpdir/scmroot/gap-pkg-grape'...
$ git fetch origin 2c2ded063c8b3c21e8d93503c9afa66f639401c7:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/gap-pkg-grape
 * [new ref]         2c2ded063c8b3c21e8d93503c9afa66f639401c7 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 2c2ded0 Rebuilt for https://fedoraproject.org/wiki/Fedora_39_Mass_Rebuild