$ git clone -n https://src.fedoraproject.org/rpms/qcoro.git /var/lib/mock/f40-build-1524302-23919/root/chroot_tmpdir/scmroot/qcoro
Cloning into '/var/lib/mock/f40-build-1524302-23919/root/chroot_tmpdir/scmroot/qcoro'...
$ git fetch origin f42cf4f8d1a8d6b1d72d7dccbb019fa1048b8efc:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/qcoro
 * [new ref]         f42cf4f8d1a8d6b1d72d7dccbb019fa1048b8efc -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at f42cf4f Rebuild (qt6)