$ git clone -n https://src.fedoraproject.org/rpms/fuse-emulator.git /var/lib/mock/f45-build-9339-401/root/chroot_tmpdir/scmroot/fuse-emulator
Cloning into '/var/lib/mock/f45-build-9339-401/root/chroot_tmpdir/scmroot/fuse-emulator'...
$ git fetch origin befdb5d82644e249fce7127ff0e157a5d19dedd9:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/fuse-emulator
 * [new ref]         befdb5d82644e249fce7127ff0e157a5d19dedd9 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at befdb5d Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild