$ git clone -n https://src.fedoraproject.org/rpms/rust-crossfont.git /var/lib/mock/f40-build-2115322-50684/root/chroot_tmpdir/scmroot/rust-crossfont
Cloning into '/var/lib/mock/f40-build-2115322-50684/root/chroot_tmpdir/scmroot/rust-crossfont'...
$ git fetch origin 114d21c803c350967f381e9093e17d77c568ba76:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rust-crossfont
 * [new ref]         114d21c803c350967f381e9093e17d77c568ba76 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 114d21c Update to version 0.5.2; Fixes RHBZ#2251366