$ git clone -n https://src.fedoraproject.org/rpms/python-gmpy2.git /var/lib/mock/f40-build-770899-125901/root/chroot_tmpdir/scmroot/python-gmpy2
Cloning into '/var/lib/mock/f40-build-770899-125901/root/chroot_tmpdir/scmroot/python-gmpy2'...
$ git fetch origin ac6437c5c6efdf5a642ac01b34829c46ccfbdaac:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/python-gmpy2
 * [new ref]         ac6437c5c6efdf5a642ac01b34829c46ccfbdaac -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at ac6437c Rebuilt for https://fedoraproject.org/wiki/Fedora_39_Mass_Rebuild