$ git clone -n https://src.fedoraproject.org/rpms/koji-osbuild.git /var/lib/mock/f40-build-2601815-63218/root/chroot_tmpdir/scmroot/koji-osbuild
Cloning into '/var/lib/mock/f40-build-2601815-63218/root/chroot_tmpdir/scmroot/koji-osbuild'...
$ git fetch origin 9799675b2b63f33c9ea1ba70d93ab0fc18e89db0:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/koji-osbuild
 * [new ref]         9799675b2b63f33c9ea1ba70d93ab0fc18e89db0 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 9799675 Rebuilt for https://fedoraproject.org/wiki/Fedora_40_Mass_Rebuild