$ git clone -n https://src.fedoraproject.org/rpms/desktop-file-utils.git /var/lib/mock/f45-build-7423-363/root/chroot_tmpdir/scmroot/desktop-file-utils
Cloning into '/var/lib/mock/f45-build-7423-363/root/chroot_tmpdir/scmroot/desktop-file-utils'...
$ git fetch origin a7912c76934f9b7c49a0d9658c4df2f164c309d1:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/desktop-file-utils
 * [new ref]         a7912c76934f9b7c49a0d9658c4df2f164c309d1 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at a7912c7 Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild