$ git clone -n https://src.fedoraproject.org/rpms/rubygem-excon.git /var/lib/mock/f41-build-1201387-22419/root/chroot_tmpdir/scmroot/rubygem-excon
Cloning into '/var/lib/mock/f41-build-1201387-22419/root/chroot_tmpdir/scmroot/rubygem-excon'...
$ git fetch origin dc03b153ddd7de145f713df0fb20d7c3320307b0:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rubygem-excon
 * [new ref]         dc03b153ddd7de145f713df0fb20d7c3320307b0 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at dc03b15 Rebuilt for https://fedoraproject.org/wiki/Fedora_40_Mass_Rebuild