$ git clone -n https://src.fedoraproject.org/rpms/rubygem-sshkey.git /var/lib/mock/f39-build-1463124-33396/root/chroot_tmpdir/scmroot/rubygem-sshkey
Cloning into '/var/lib/mock/f39-build-1463124-33396/root/chroot_tmpdir/scmroot/rubygem-sshkey'...
$ git fetch origin 4259853ab92d7bc6a0a8e932467a54841435b2b4:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rubygem-sshkey
 * [new ref]         4259853ab92d7bc6a0a8e932467a54841435b2b4 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 4259853 Rebuilt for https://fedoraproject.org/wiki/Fedora_39_Mass_Rebuild