$ git clone -n https://src.fedoraproject.org/rpms/rubygem-fake_ftp.git /var/lib/mock/f39-build-1499249-34744/root/chroot_tmpdir/scmroot/rubygem-fake_ftp
Cloning into '/var/lib/mock/f39-build-1499249-34744/root/chroot_tmpdir/scmroot/rubygem-fake_ftp'...
$ git fetch origin dd0fb1771b7d000a90308483cc77304a2b861106:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rubygem-fake_ftp
 * [new ref]         dd0fb1771b7d000a90308483cc77304a2b861106 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at dd0fb17 Rebuilt for https://fedoraproject.org/wiki/Fedora_39_Mass_Rebuild