$ git clone -n https://src.fedoraproject.org/rpms/gap-pkg-crypting.git /var/lib/mock/f40-build-2590548-62625/root/chroot_tmpdir/scmroot/gap-pkg-crypting
Cloning into '/var/lib/mock/f40-build-2590548-62625/root/chroot_tmpdir/scmroot/gap-pkg-crypting'...
$ git fetch origin 28d5bdad6bf8b26e53ddd5a882b4d5b144653247:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/gap-pkg-crypting
 * [new ref]         28d5bdad6bf8b26e53ddd5a882b4d5b144653247 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 28d5bda Rebuild for gap 4.13.0