$ git clone -n https://src.fedoraproject.org/rpms/poppler.git /var/lib/mock/f42-build-side-1-3505190-45989/root/chroot_tmpdir/scmroot/poppler
Cloning into '/var/lib/mock/f42-build-side-1-3505190-45989/root/chroot_tmpdir/scmroot/poppler'...
$ git fetch origin 3868ed2dd7e60ea84f589497f1a2ad85d3a1dc59:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/poppler
 * [new ref]         3868ed2dd7e60ea84f589497f1a2ad85d3a1dc59 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 3868ed2 Update to 25.02.0