$ git clone -n https://src.fedoraproject.org/rpms/receptor.git /var/lib/mock/f39-build-1572757-37791/root/chroot_tmpdir/scmroot/receptor
Cloning into '/var/lib/mock/f39-build-1572757-37791/root/chroot_tmpdir/scmroot/receptor'...
$ git fetch origin 651beeaa037d3b63d27609cce85d556ef5dc3ad9:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/receptor
 * [new ref]         651beeaa037d3b63d27609cce85d556ef5dc3ad9 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 651beea fixed typo