$ git clone -n https://src.fedoraproject.org/rpms/gfs-decker-fonts.git /var/lib/mock/f45-build-9815-409/root/chroot_tmpdir/scmroot/gfs-decker-fonts
Cloning into '/var/lib/mock/f45-build-9815-409/root/chroot_tmpdir/scmroot/gfs-decker-fonts'...
$ git fetch origin 5516f89f4c26482b3238aa263fe1e46c00231e14:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/gfs-decker-fonts
 * [new ref]         5516f89f4c26482b3238aa263fe1e46c00231e14 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 5516f89 Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild