$ git clone -n https://src.fedoraproject.org/rpms/golang-mvdan-gofumpt.git /var/lib/mock/f45-build-12744-443/root/chroot_tmpdir/scmroot/golang-mvdan-gofumpt
Cloning into '/var/lib/mock/f45-build-12744-443/root/chroot_tmpdir/scmroot/golang-mvdan-gofumpt'...
$ git fetch origin c14648140715e04c96ad424957b012cfadbbdb22:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/golang-mvdan-gofumpt
 * [new ref]         c14648140715e04c96ad424957b012cfadbbdb22 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at c146481 Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild