$ git clone -n https://src.fedoraproject.org/rpms/gjs.git /var/lib/mock/f41-build-side-1-2750630-31056/root/chroot_tmpdir/scmroot/gjs
Cloning into '/var/lib/mock/f41-build-side-1-2750630-31056/root/chroot_tmpdir/scmroot/gjs'...
$ git fetch origin d742af2d2dd29e0a50264ffffbf37265ecefcd3f:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/gjs
 * [new ref]         d742af2d2dd29e0a50264ffffbf37265ecefcd3f -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at d742af2 Update to 1.82.0