$ git clone -n https://src.fedoraproject.org/rpms/dumb-init.git /var/lib/mock/f39-build-1731094-41251/root/chroot_tmpdir/scmroot/dumb-init
Cloning into '/var/lib/mock/f39-build-1731094-41251/root/chroot_tmpdir/scmroot/dumb-init'...
$ git fetch origin 8e6b60cf030401238e9475c8c655fb17adad4444:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/dumb-init
 * [new ref]         8e6b60cf030401238e9475c8c655fb17adad4444 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 8e6b60c Rebuilt for https://fedoraproject.org/wiki/Fedora_39_Mass_Rebuild