$ git clone -n https://src.fedoraproject.org/rpms/foot.git /var/lib/mock/f39-build-1520887-35832/root/chroot_tmpdir/scmroot/foot
Cloning into '/var/lib/mock/f39-build-1520887-35832/root/chroot_tmpdir/scmroot/foot'...
$ git fetch origin 15a857d8d8b130037d8e92814c53778e9a4208b4:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/foot
 * [new ref]         15a857d8d8b130037d8e92814c53778e9a4208b4 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 15a857d Update to 1.16.1 (#2243307)