$ git clone -n https://src.fedoraproject.org/rpms/rubygem-notiffany.git /var/lib/mock/f39-build-1499375-34744/root/chroot_tmpdir/scmroot/rubygem-notiffany
Cloning into '/var/lib/mock/f39-build-1499375-34744/root/chroot_tmpdir/scmroot/rubygem-notiffany'...
$ git fetch origin de93df86477d4e6c3624d5e78e1c029ccbc3a18d:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rubygem-notiffany
 * [new ref]         de93df86477d4e6c3624d5e78e1c029ccbc3a18d -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at de93df8 Rebuilt for https://fedoraproject.org/wiki/Fedora_39_Mass_Rebuild