$ git clone -n https://src.fedoraproject.org/rpms/golang-github-git-gcfg.git /var/lib/mock/f40-build-2583197-62399/root/chroot_tmpdir/scmroot/golang-github-git-gcfg
Cloning into '/var/lib/mock/f40-build-2583197-62399/root/chroot_tmpdir/scmroot/golang-github-git-gcfg'...
$ git fetch origin 63bd0ed12e24ab0b13f8cba6f103a1a31888ce58:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/golang-github-git-gcfg
 * [new ref]         63bd0ed12e24ab0b13f8cba6f103a1a31888ce58 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 63bd0ed Rebuilt for https://fedoraproject.org/wiki/Fedora_40_Mass_Rebuild