$ git clone -n https://src.fedoraproject.org/rpms/fpaste.git /var/lib/mock/f39-build-1462168-33309/root/chroot_tmpdir/scmroot/fpaste
Cloning into '/var/lib/mock/f39-build-1462168-33309/root/chroot_tmpdir/scmroot/fpaste'...
$ git fetch origin 66e338d160ab3b92403ddae0a882731d7f6b3141:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/fpaste
 * [new ref]         66e338d160ab3b92403ddae0a882731d7f6b3141 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 66e338d feat: update to 0.4.4.0 (fixes rh#2236636)