$ git clone -n https://src.fedoraproject.org/rpms/librsvg2.git /var/lib/mock/f41-build-856319-167552/root/chroot_tmpdir/scmroot/librsvg2
Cloning into '/var/lib/mock/f41-build-856319-167552/root/chroot_tmpdir/scmroot/librsvg2'...
$ git fetch origin ca76d56485e252f017f2316eea172f20d62f4ffe:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/librsvg2
 * [new ref]         ca76d56485e252f017f2316eea172f20d62f4ffe -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at ca76d56 Update to 2.59.1