$ git clone -n https://src.fedoraproject.org/rpms/krdc.git /var/lib/mock/f40-build-2126188-50780/root/chroot_tmpdir/scmroot/krdc
Cloning into '/var/lib/mock/f40-build-2126188-50780/root/chroot_tmpdir/scmroot/krdc'...
$ git fetch origin 7751ba5f7732e561d9eccc5a741b576e66bb523d:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/krdc
 * [new ref]         7751ba5f7732e561d9eccc5a741b576e66bb523d -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 7751ba5 24.01.85